REVIEW OF THE GEOLOGY OF FLORIDA 
123 
175 feet. 
Light 
180 feet. 
Very 
185 feet. 
Very 
194 feet. 
Very 
220 feet. 
Very 
230 feet. 
Lime 
240 feet. 
Lime 
250 feet. 
Light 
310 feet. 
Light 
330 feet. 
Light 
333 feet. 
Lime 
336 feet. 
Lime 
or cream colored marl with phosphate pebble and some sand. 
sandy calcareous material including phosphate pebble. 
sandy calcareous material including phosphate pebble. 
light colored soft lime rock including some sand. 
soft white lime rock or marl, including some black phosphate 
pebble. 
rock breaking into small angular fragments, 
rock breaking into small angular fragments, 
colored lime rock, 
colored lime rock. 
colored lime rock breaking into angular fragments, 
rock breaking into somewhat coarse angular fragments, 
rock breaking into somewhat coarse angular fragments. 
SUMMARY OF RECORD. 
1 to 60 feet reported sand, clay or sand and clay, Sample not preserved. 
60 feet, stratum of blue calcareous clay. 
70 to 100 feet, gray very sandy shell marl, including phosphate pebble. 
103 to 106 feet, coarse sand containing phosphate pebbles and some shell 
fragments. 
114 to 220 feet, prevailingly light colored marl contains small phosphate 
pebbles. 
230 to 336 feet, limestone rock which breaks into angular fragments sugges¬ 
tive in shape of small plates from echinoderms. This horizon 
is similar in lithology to that found at Tiger Bay at a depth 
of about 300 feet. 
Interpretation: The interval from 60 to 115 feet is repre¬ 
sented in the first well by two samples, and in the second by eight 
samples. A number of fossil shells have been obtained from these 
samples but the species not having been identified, the age of the 
formations remains undetermined. The interval from 140 to 
about 220 feet is represented by eight samples from the first well 
and nine samples from the second well. From the lithology of 
these samples the writer was inclined originally to refer this part 
of the section to the Alum Bluff formation. However, Dr. Cush¬ 
man finds that these samples contain foraminifera which indicate 
that the formations are of Comanchean age. This is very unex¬ 
pected, especially as the samples contain the pebble phosphate not 
elsewhere reported from the Comanchean formations. Below 115 
feet, according to the fossils in samples submitted to Dr. Cushman 
is to be regarded as Comanchean (Lower Cretaceous). Addi- 
